CN2470756Y

CN2470756Y - Solar water-heater

Info

Publication number: CN2470756Y
Application number: CN01212601U
Authority: CN
Inventors: 邝建设
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-28
Filing date: 2001-02-28
Publication date: 2002-01-09
Anticipated expiration: 2011-02-28

Abstract

The utility model provides a solar water heater, which is composed of a stent 8, a reflector 5, a collector tube 4, a plate glass 3, a water tank 2, pipelines and valves. The reflector 5 of the utility model is a three curved faces wide angle reflection membrane, which is composed of a main reflection face of one side, a supporting reflection face and a sub-reflection face of the other side. The upper end of the main reflection face is pressed close to the plate glass, and the lower end i.e. the reflector bottom is linked with the lower end of the supporting reflection face. The upper end of the supporting reflection face is linked with the lower end of the sub reflection face. The upper end of the sub reflection face is pressed close to the plate glass. The focus of three reflection faces is all fallen inside the collector tube. The water tank upper part of the utility model has a cocked inverted L type adjutage, and a reducing valve is arranged in the water inlet pipeline.

Description

Solar water heater

The utility model relates to the wide corner reflection diaphragm type vacuum of a kind of solar water heater, particularly multi sphere bottle solar water heater.

Solar energy is continually developed, is utilized by people as inexhaustible, nexhaustible new forms of energy, and wherein comparatively successful is solar water heater.Solar water heater of the prior art is mostly by heat collector, circulating water pipe, storage tank constitutes, wherein heat collector is divided into vacuum tube collector and flange plate type heat collector again, though self characteristics and advantage are respectively arranged, but heat absorption efficiency is still limited, can not make full use of solar thermal energy, people provide hot water for the fundamental requirement of water heater, and climate temperature is higher to the temperature requirement of water when lower, that is to say that winter is higher to the requirement of water temperature (temperature relatively), general simmering shining type and conventional plate type solar device are difficult to reach requirement, have therefore proposed the reflectance coating of various curved surfaces.From the Searches of Patent Literature and be used for both at home and abroad industry solar energy equipment, widely used parabola and various curved surface such as W type etc. are symmetric figure cumulative face, in the gathering illumination that increases sunshine, improve heat-collecting temperature, play better action theoretically, but because the sun and this objective factor of ball operating law, be actually used in the also few of pot-type boiler, there is ideal to implement focus as paraboloidal, if but incidence angle has deviation slightly, and reflected ray just may go out outside the thermal-collecting tube in drift, do not reach the effect of anticipation, therefore good automatic tracks sunlight system need be set, manufacturing cost is increased, not have popularization and application at present.W type reflectance coating and for example, though the variation of the incidence angle taken into account and the mentality of designing of these two factors of heat build-up effect are arranged, because the symmetric form of W type is difficult to take into account thermal-collecting tube both sides focusing effect, thereby the opening of the curved surface on both sides (width) is narrower, so be difficult to the temperature requirement that reaches desirable.

In addition, at present the feed mechanism of water heater has the ball-cock assembly method, need increase the space of installation float valve in boiler, has not only increased cost but also easy break-down.Also have electrode control method, need to be equipped with control power supply, electronic device, magnetic valve etc. had both increased the secondary energy consumption, had increased cost again.Prior art is all complicated in a word, cost height, inconvenience.

The purpose of this utility model is design a kind of efficient simple in structure high reflectance coating, realizes the effect of self tracks sunlight, simplifies self water feeding mechanism, makes whole apparatus structure simple, and cost is low, the thermal efficiency is high.

The technical solution of the utility model is this solar water heater, it is by support 8, reflector 5, thermal-collecting tube 4, plate glass 3, water tank 2 and pipeline and valve are formed, its reflector 5 is three cambered surface wideangle reflection films, it is by the primary reflection surface 5-1 of a side, the boosting reflector of opposite side and secondary reflector are formed, the primary reflection surface upper end is pressed close to plate glass, the lower end is that the lower end of reflector bottom and boosting reflector joins, the upper end of boosting reflector and the lower end of secondary reflector join, the upper end of secondary reflector is pressed close to mutually with plate glass, and the focus of three reflectings surface all drops in the thermal-collecting tube.

Said solar-energy water heater, the main aperture M of its reflector reflecting surface is 4-6 D doubly, D is the diameter of thermal-collecting tube.

Said solar-energy water heater, the focus O of its primary reflection surface drops on the top in thermal-arrest tube chamber cross section, the focus O of boosting reflector ₁Drop on the middle part in thermal-arrest tube chamber cross section, the focus O of secondary reflector ₂Drop on the bottom in thermal-arrest tube chamber cross section.

Said solar-energy water heater, its reflecting surface is parabola, its cross section parabolic formula X ²Among=the 2PY, primary reflection surface P gets 140-160, and boosting reflector P gets 40-50, and secondary reflector P gets 20-25.

Said solar-energy water heater, the contact B of its boosting reflector and secondary reflector presses close to thermal-collecting tube and is crossing thermal-collecting tube axle center O ₅On the straight line at plate glass angle at 45.

Said solar-energy water heater, its water tank upper have the inverted L shape adjustable pipe of holding up 1, and pressure-reducing valve 10 is arranged in inlet pipeline.

The utility model has the advantages that:

1, broken the traditional symmetric form of heat build-up film, boosting reflector reflex in the thermal-collecting tube once more owing to can will reflect back the reflection ray that drifts to outside the thermal-collecting tube from primary reflection surface, it cooperates the excursion that has improved angle of reflection with primary reflection surface, dexterously with primary reflection surface throughout the year the excursion of 47 ° of sun incident rays all gathered on the thermal-collecting tube effectively, formed the effective focusing surface of wide-angle, the function of following the tracks of solar irradiation is arranged, omitted automatic tracking system.Three reflectings surface can satisfy the variation needs of sun irradiation angle in each spring, summer, autumn and winter in season.

2, L shaped adjustable pipe and pressure-reducing valve are used, realize the purpose of the full-automatic feedwater of constant voltage with the simplest method, and it is safe and reliable, can realize simultaneously that water inlet pipe and outlet pipe supply with a pipeline, simplified installation system, overcome many shortcomings that the solar water heater twin flue is installed, reduced the pipeline expense.Because pipeline is installed in the minimum position of whole circulation system, the function of automatic cleaning water heater pipeline is arranged.

Below accompanying drawing is described, Fig. 1 is that the utility model is analysed and observe overall schematic.Fig. 2 is overall pipeline connecting figure.1 is inverted L shape adjustable pipe, the 2nd among the figure, water tank, the 3rd, plate glass, the 4th, thermal-collecting tube, the 5th, reflector, the 6th, insulation material, the 7th, drain pan, the 8th, the support of adjustable-angle, the 9th, water inlet pipe and water outlet pipe, the 10th, choke valve, the 11st, heat control valve, the 12nd, effluent pipe mouth, the 13rd, choke valve, the 14th, heat control valve, the 15th, water inlet pipe mouth, the 16th, one-way valve, the 17th, metal winding pipe.Fig. 2 be in the reflector among reflecting film structure schematic diagram, the figure 5-1 be that principal reflection film, 5-2 are that auxiliary reflectance coating, 5-3 are that secondary reflection film, O are principal reflection film focus, O ₁Be auxiliary reflectance coating focus, O ₂Be that secondary reflection film focus, B are the contacts, the 3rd of 5-2 and 5-3, plate glass, the 4th, thermal-collecting tube.O ₃It is the thermal-collecting tube axle center.α be throughout the year sunray in latitude direction excursion.M is that main aperture, N are that auxiliary aperture, H are the degree of depth.

Below in conjunction with description of drawings embodiment of the present utility model:

According to above-mentioned technical parameter, principal reflection film arc length is got 174～185mm, auxiliary reflectance coating arc length 42～50mm, secondary reflection film arc length 56～64mm.The high 600mm of inverted L shape adjustable pipe, bent tube section 200mm.When thermal-collecting tube diameter D=40mm, main aperture M gets 160～238mm, and auxiliary aperture N is 50～68.8mm, and the heat collector depth H is 85～93mm, and thermal-collecting tube can be established the parallel placement of 4-8 root, and near plate glass, two ends are connected by metal winding pipe 17.Reflecting plate is arranged perpendicular to plate glass in the heat-collecting box both sides, promptly vertical with thermal-collecting tube.The thermal-collecting tube that water heater adopted, its two ends are by being connected to become the coil pipe that a series connection is heated step by step with the footpath metal winding pipe.It feeds the top of water tank topmost, in the outlet of this end, the flow direction of an one-way valve 16 control water is arranged, the bottom of coil pipe, and water pipe is connected to water tank bottom interface, thereby water tank and coil pipe have been formed a circulatory system.Wherein, except coil portions was metal material, all the other water circulating pipes and water tank part all adopted the manufacturing of thermal resistance material, and whole system adopts the expanded material insulation.Water heater cumulative panel becomes the β angle with ground level, β=(23.5+X) ° (X is the latitude value of place) placement.After installing, open water intaking valve, regulate pressure-reducing valve, water level to L adjustable pipe is lower than goes up pipe bent position, so just can guarantee that water is by water supply pipe process flow-limiting valve, the pressure-reducing valve relay pumping, after water level reached this height of surge pipe, pressure-reducing valve cut out automatically, when water level drops to certain altitude after the water, hydraulic pressure can be opened pressure-reducing valve automatically and supply water, thereby has realized the constant voltage full automatic water supply.When solar radiation wideangle reflection film, the energy collecting tube temperature raises rapidly, and be passed to when connecting the metal winding pipe part, because hot water or cold water's proportion difference makes pipe bent position water upwards flow, thereby produce the basic motive of the circulatory system, flow to when water and promote one-way valve behind the top of coil pipe and enter boiler, and the lower water of the temperature of lower of water tank reenters thermal-collecting tube by the coil pipe lower end and further heats, like this, as long as there is the temperature difference in water, circulation just can not stop.When the water temperature of water tank equaled at that time the thermal-collecting tube temperature, the circulation trend stopped.Hot water can use at any time.In addition, considering that high temperature causes the reduction of Gas Solubility to make the water in the thermal-collecting tube can produce bubble, at the adjustable pipe 1 that the topmost of water tank is installed, also is a root breath adjustable pipe, and the bubble that enters water along with the hot-fluid that rises can be emitted through it.The coil pipe heat energy that can scatter and disappear when not having illumination, water temperature reduces in the coil pipe thereby make, circulation power has reverse trend, but because one-way valve has automatic prevention reverse flow, so that water heater has fabulous heat insulation effect.Because the constant voltage of pressure-reducing valve and L shaped adjustable pipe is automatically given water function, can realize that water inlet pipe and outlet pipe supply with a pipeline, because feed pipe and water pipe supply to be installed in the minimum position of whole circulation system with a pipeline 9, and the function of automatic cleaning water heater pipeline is arranged.

Claims

1, a kind of solar water heater, it is by support (8), reflector (5), thermal-collecting tube (4), plate glass (3), water tank (2) and pipeline and valve are formed, it is characterized in that reflector (5) is three cambered surface wideangle reflection films, it is by the primary reflection surface (5-1) of a side, the boosting reflector (5-2) of opposite side and secondary reflector (5-3) are formed, the primary reflection surface upper end is pressed close to plate glass, the lower end is that the lower end of reflector bottom and boosting reflector joins, the upper end of boosting reflector and the lower end of secondary reflector join, the upper end of secondary reflector is pressed close to mutually with plate glass, and the focus of three reflectings surface all drops in the thermal-collecting tube.

2, solar water heater according to claim 1, the main aperture M that it is characterized in that the reflector reflecting surface are 4-6 D doubly, and D is the diameter of thermal-collecting tube.

3, solar water heater according to claim 1 and 2 is characterized in that the focus O of primary reflection surface drops on the top of thermal-arrest tube chamber, the focus O of boosting reflector ₁Drop on the middle part of thermal-arrest tube chamber, the focus O of secondary reflector ₂Drop on the bottom of thermal-arrest tube chamber.

4,, it is characterized in that reflecting surface is parabola, its cross section parabolic formula X according to the described solar water heater of one of claim 1-3 ²Among=the 2PY, primary reflection surface P gets 140-160, and boosting reflector P gets 40-50, and the secondary reflection face is got 20-25.

5,, it is characterized in that the contact B of boosting reflector and secondary reflector presses close to thermal-collecting tube and crossing thermal-collecting tube axle center O according to the described solar water heater of one of claim 1-4 ₃On the straight line at plate glass angle at 45.

6,, it is characterized in that water tank upper has the inverted L shape adjustable pipe of holding up (1), has pressure-reducing valve (10) in inlet pipeline according to the described solar water heater of one of claim 1-5.